SYSTEM FOR SIMULTANEOUSLY TRANSMITTING VOICE SIGNAL AND CONTROL DATA USING ONE VOICE COMMUNICATION LINE AND METHOD THEREFOR

摘要

PURPOSE: A system for simultaneously transmitting a voice signal and control data using one voice communication line is provided to transmit control data converted into binary codes to frames, thereby enabling fast and exact transmission of information for various controls. CONSTITUTION: A voice signal/control data synthesizer(10) synthesizes a voice signal with control data. A voice signal/control data separator(20) separates the synthesized voice signal from the control data. The synthesizer(10) comprises as follows. A voice signal band limiter(11) limits a band portion of the voice signal. A control tone creator(12) creates a 'SPACE' tone in the first band if a code bit of the control data is '0', and creates 2 control tones every bit in the second band if the code bit is '1'. A voice signal/control tone synthesizer(13) synthesizes the voice signal with the control tones in entire voice bands. The separator(20) comprises as follows. A voice signal separator(21) separates the voice signal from the voice signal/control tones. A control tone separator(22) separates the control tones from the voice signal/control tones. A control data restorer(23) restores the separated control tones to the control data having binary code frames.